Rotary rig



Dec. 24, 1929. H PENNINGTON 1,741,140

ROTARY RIG Filed April 6. 1925 4 Sheets-Sheet l wxh, www

Dec. 24, 1929. H. PENNINGTON ROTARY RI G AFiled April 6, 1925v 4Sheets-Sheet 2 Dec. 24, 1929. H, PEMWNGTQNv v 1,741,140

ROTARY RIG Filed April 6. 1925 4 Sheets-Shea?l 5 l( 9 ZZ ,Z6 'Z5 .www

Dec; 24, 1929. H. PENNxNGToN ROTARY RIG Filed April 6. 1925 4sheets-Sheet 4 Patented Dee. 24, 1929 HARRY PENNINGTON, or HOUSTON,TEXAS ROTARY RIG- Application leu April e,

This invention relates to rigs for drilling wellsand more particularlyto rotary rigs.

An object of the invention is the provision of a portable rig in whichan internal combustion engine may be employed as a prime mover, havingsufficient flexibility to permit any of the driven elements to be run ata desired speed.

A further object is to provide means forvarying the speed of the pump,hoist or rotary apparatus independently of any of the others whereby anydesired apparatus may be runat low or high speed While one of the otherdriven parts is run at high or low speed. A further object of theinvention is the provision of a rig which will reduce the cost ofoperation and which may be readily moved from place to place. j

By means of the construction provided, the pump, hoist or rotary maybedriven at a high or low speed, as desired. This permits variation in thespeed of operation of the driven part at maximum engine efficiency. Itwill be apparent that a variation in the speed of the hoisting apparatusaccording to the load being raised, is highly desirable. By permittingvariation in the speed of the rotary, the-apparatus is adaptable for thepurpose of drilling holes. of various diameter and in various earthformations.

In the accompanying drawings, J I have shown one embodiment of theinvention. In this showing:

Figure 1 is aside elevation of the rig in position on the base of aderrick, parts being shown in section, i

Figure 2 is a plan view,

f Figure 3 is a vertical sectional view of the transmissionsubstantially on line 3 3 of 4o Figure 2,

Figure 4 is a vertical transverse view on line 4 4 of Figure `3,

Figure 5 is a transverse sectional view substantially on line 5 5 ofFigure 2, showing the transmission casing in' rear elevation,

and

Figure 6 is a transverse vertical sectional viewl on line 6 6 of Figure3.

In constructing the rig, it 1s preferably mounted on a frame andprovided with tracsectional similar to a trailer when being moved from1925. Serial No. 21,081.

tion Wheels whereby it may be transported from place to place. As shown,I provide a frame consisting of longitudinal members 1 connected bysuitable transverse members and supporting a prime mover 2, such as aninternal combustion engine at its forward end. Supplemental longitudinalframe members 3 are arranged adjacent the rear, and a portion of thesemembers is inclined inwardly, as at 4, and secured to the mainlongitudinal frame members, as at 5. An axle 6 is arranged beneath theframe and is provided withsuitable traction Wheels 7 The device, asshown, is adapted to be pulled in a manner place to place, but may beprovided with ad- Y ditional traction wheels if desired. At the rear ofthe engine, there is provided a clutch casing 8 having a suitable clutch(not shown) arranged therein, and controlled by a clutch lever 9. Adrive shaft 10 extends rearwardly from the clutch casing `and isreceived in a transmission casing 11. As shown, (see Figure 3) thetransmission casing is provided with a removable cover 12 to permitaccess to 75 the interior and the ends of the drive shaft are mounted insuitable bearings 13 in the front and rear walls of the casing. Drivegears 14, 15 and 16 are arranged on the drive shaft within thetransmission casing and are secured thereto in any suitable manner torevolve therewith.

As the rotary rig is provided with three driven elements, Ilprovidethree driven shafts 17, 18, and 19, which may be arranged around thedrive shaft in a triangle, as shown in Figure 6 of the drawings, withthe drive shaft forming the center of the triangle. These shafts aresquared in cross section, as shown, and suitable clusters of gears 2Oare mounted on these shafts to permit relative longitudinal movement andprevent relative rotation. The shaft 17 is connected to the draw worksor hoisting apparatus, the shaft 18 isA connected to the rotary, and theshaft 19 is connected to the pump.v As shown, the gear cluster 20 isprovided with gears 21, 22 and 23 of different diameters to mesh withthe 'gears 14, 15 and 16|on the main shaft and permit desired changes inthe speed ratio behousing.

26 on the various gear clusters.

transmission casing and these levers are provided with shifting members25, the ends ofl which are adapted to be received in grooves The gearshifting levers may be provided with spaced depressions 27 adapted to beengaged by a spring 28 to retain the gears in position and preventaccidental disengagement. The oiiter ends of the gear shifting leversare provided with suitable joints 29 to which links or levers (notshown) may be connected and extended to any suitable point on the rig.

The shaft 17 is mounted in suitable bearings 30 in the end walls of thetransmission housing and this shaft projects from the main housing intoan auxiliary housing 31. As shown, the rear side of the auxiliaryhousing is provided with a removable plate 32. Within the auxiliarhousing, vided with a b,

-mesh with a bevel gear 34. This gear is carried by a hub/35 mounted ona shaft 36, and the shaft is arranged in suitable bearings 37 in theside walls of 'the auxiliary transverse As shown (see Figure 2), theshaft projects beyond'the ends of the auxiliary transmission housing andis provided with a pinion 38 meshing with a gear 39 on drum shaft 40.The drum shaft is supported in suitable pedestals 41.

' When the rig is in position, it is arranged over aderrick sill 42 andthe front end of the frame of the rig is supported by suitable blocks43. The frame is provided with'a transverse member 44 arranged beneaththe bearing pedestals 41 and adapted to rest upon one ofthe transversemembers'of the derrick sill. This member secures the pedestals in anoperative position and further insures proper alinement of the framewhen resting on the derrick sill, thus preventing the bearing from beingmisalined.

The drum shaft is provided with a drum 45 :of the usual construction,and a suitable clutch (not-shown) is arranged between the drum and theshaft and controlled by 'a clutch lever 46. The drum is also providedwith a suitable brake consisting of a brake drum 48 and a brake band 49.This band is provided with suitable connections (not shown) to a brakelever 50 to permit actuation of the brake'.v

' The shaft 18 projects from the rear of the transmission housing andextends longitudinally of the frame, as shown in Figure 1 of thedrawings. This shaft extends beyond the rear transverse member 51 of theframe and the shaft 17 is pro- 'I eveled pinion 33 adapted to isprovided with suitable universal joints 52 and 53 to permit the extremeend of the shaft to be properly arranged and secured to a rotary 54 ofthe usual construction. The shaft may also project from the front of thetransmission casing, as at 55 (see Figure 2) to drive any suitableauxiliary apparatus.

The shaft 19 likewise projects from the rear of the transmission casing,as shown in Figure 2 of the drawings, and the rear end of this shaft ismounted in a suitable bearing carried by the rear transverse member 51of the frame. Beyond the bearing, the shaft is provided with a pinion 57adapted to mesh with a gear 58 carried on the shaft of a pump 59. Thisshaft may also project from the front of the transmission casing, asindicated at 60.

1n Figure 5 of the drawings, 1 have shown means for supporting thetransmission casing consisting of a transverse member 61 having suitableupright members 62 at each end. These upright members are secured to thelongitudinal si e frame members 1 as shown, and the upper ends of thesemembers are connected by a downwardly inclined transverse member 63which engages the under side of the transmission housing.

The operation of the device will be apparent from the foregoingdescription. The engine 2 or other prime mover is operated to rof tatethe main drive shaft 10. By bringing the gear 22 of any of thevclustersof gears into engagement with the pinion 15 on the drive shaft, thecorresponding shaft 17, 18 or 19 may be drivenat low speed. Similarly,intermediate speed may be obtained on any of the driven shafts bybringing the gear 23. into mesh with the drive pinion 16 and high speedobtained when the gear 21 and the pinion 14 is in mesh. As stated, anyof the clusters of gears may be moved longitudinally of its shaftindependently of the remaining clusters of gears through its gear shiftlever 24 and this permits any one of the'driven shafts to be driven at ahigh or low speed, as desired and any of the remaining driven shafts tobe driven at a desired speed different from thespeed of the first shaft.

In order to present maximum efiiciency, it is necessary that a rig havesufIicient exibility in operation whereby the speedof any of the drivenparts may be varied at the will of the operator independent ofthe speedof the engine, whiclrpermits a change in the speed ofone of the driveelements without affecting the speed of another driven element and thetransmission forming a part of the present apparatus is designed forthis purpose. Under certain conditions, it is necessary to drive therotary at a low rate of speed be vdriven at a much higher rate of speedI and drilling accomplished in much less time. It is frequentlynecessary when increasing the speed of the rotary, to decrease the speedof the pump and this result can be readily obtained with the presentconstruct-ion.

The portability of the apparatus permits its ready removal from onelocation to another and materially reduces the time necessary kinaccomplishing this result. The amount of fuel employed and the amount ofwater. necessary in the operation of the device, when supplied with aninternal combustion engine, is materially less than that employed insteam rigs and the ease of removal from one point to another is amaterial advantage over the ordinary steam rig construction.

It is to be understood that the form of my invention herewith shown anddescribed is .to

be taken as a preferred example of the same, and that various changes inthe shape, size,

and arrangement of parts may be resorted to without departing from thespirit of the invention or the scope of the subjoined claims.

I claim:

l. In a rotary rig comprising a source of l power, the combination of arotary member operatively connected to said source of power, a pumpoperatively connected to said -source of power, and means for varyingthe Voperatively connected to said source of power, a pump operativelyconnected to said source of power, a hoist operatively connected to saidsource of power, and means for varying the speed ratio of any one ofsaid members and said source of power independently of the othermembers.

4. In a rotary rig comprising a power shaft, the combination of a rotarymember, a pump, a hoist, and gearing connecting said power shaft to saidrotary, pump and hoist, said gearing being provided with variable speedratios whereby the speed ratio of said rotary, said pump or said hoistto said power shaft may be varied independently of each other. p

5. In a rotary rig comprising a frame and an engine mounted on saidframe, the combination of a drive shaft connected to said engine, aplurality of driven shafts mounted on said frame and arranged aroundsaid drive shaft, gearing connecting each of said driven shafts to saiddrive shaft to drive all of said power independently of -the shaftssimultaneously, and means for varying the speed of any one of saiddriven shafts independently of the other driven shafts.

.6. In a rotary rig comprising a source of power, the combination of adrive shaft connected to said source of power, a driven shaft connectedto a rotary member, a driven shaft connected to a hoisting apparatus, adriven shaft connected to a pump, gearing connecting each of said drivenshafts to said drive shafts to drive said rotary, hoisting apparatus andpump simultaneously, and means for varying the speed ratio of any one ofsaid members and said source of power independently of the othermembers.

In testimony whereof, I aix my signature.

HARRY PEN N INGTON.

